Home / 47,976.12-71,969.30-12,916.28

Finding the Fourth Proportional to 47,976.12, 71,969.30 and 12,916.28

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Solution

The fourth proportional to 47,976.12, 71,969.30 and 12,916.28 is: 19,375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,976.12 : 71,969.30 = 12,916.28 : x
  2. Step 2: Convert to fraction form
    47,976.12/71,969.30 = 12,916.28/x
  3. Step 3: Cross multiply
    47,976.12x = 71,969.30 × 12,916.28
  4. Step 4: Simplify right side
    47,976.12x = 929,575,630.20
  5. Step 5: Solve for x
    x = 929,575,630.20/47,976.12
  6. Step 6: Final answer
    x = 19,375.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.